Olympus Dam Access provides entry to the Big Thompson River near Lake Estes in Estes Park, with a specific fly-fishing-only regulation in effect from the dam downstream to Waltonia Bridge where all trout must be released immediately upon catch.

The access point is located at Mall Road at the east end of Lake Estes just beyond Olympus Dam, between US 34 and US 36, offering parking and river access for anglers and paddlers exploring this scenic section of the Big Thompson River canyon.